package com.xiaobai;

import com.alibaba.cloud.nacos.NacosConfigManager;
import com.alibaba.nacos.api.config.ConfigService;
import com.alibaba.nacos.api.config.listener.Listener;
import org.springframework.boot.ApplicationRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.openfeign.EnableFeignClients;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.annotation.Bean;

import java.util.concurrent.Executor;
import java.util.concurrent.Executors;

@SpringBootApplication(scanBasePackages = {"com.xiaobai"})
@EnableDiscoveryClient //核心注解
@EnableFeignClients()
public class ServiceOrderApplication {
    public static void main(String[] args) {
        SpringApplication.run(ServiceOrderApplication.class, args);
    }

    //1.项目启动就监听配置文件的变化
    //2.发生变化后拿到变化值
    //3.发送邮件
    @Bean
    ApplicationRunner applicationRunner(NacosConfigManager nacosConfigManager) {
        return args -> {
            ConfigService configService = nacosConfigManager.getConfigService();
            configService.addListener("service-order.properties",
                    "DEFAULT_GROUP", new Listener() {
                        @Override
                        public Executor getExecutor() {
                            return Executors.newFixedThreadPool(4);
                        }

                        @Override
                        public void receiveConfigInfo(String s) {
                            // 解析并处理配置文件中的变化
                            System.out.println("变化的配置信息为," + s);
                            System.out.println("发送邮件....");
                        }
                    });
            System.out.println("ServiceOrderApplication is running...");
        };
    }
}
